Lock.



A. 0'. JACKSON. LOCK.

APPLICATION TILED JAN29, 1914.

1,1 30,822. Patented Mar. 9,1915.

FIG. 3. FIG. 4.

WITNESSES: fiVVE/VTOI'? gay-Mg ZIM- %4W LOOK COMPANY, OF PHILADELPHIA, PENNSYLVANIA, "A CORPORATION OF PENN-l SYLVANIA.

Specification of Letters Patent.

LOCK. I

Patented Mar.9,"1915.

Application filed masts, 1914.. Serial No. 815,135.

To all whom it may concern:

Be it known that I, ARTHUR G. JACKSON, a citizen of the United States, residing at Philadelphia, county of Philadelphia, and

State of Pennsylvania, have invented a new and useful Improvement in Locks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which formapart of this specification.

A. freezing of the, tumblers one with the other often occurs with tumbler locks. This occurs, for instance, in cold'weather'particularly. I have devised a construction whereby this may be avoided. Speaking generally, I accomplish the result as follows: Between contiguous tumblers, near their outer end, which engages or interlocks with tumbler'stump dog or bolt, whichever the case may be, I interpose a wire, or plate, or other like device, which acts as a separator, and at the pivotal portion of the tumblers I insert between contiguous tumblers, a wire ring or washer. In general, I use two uprights or lugs, which may be grooved, between which are stretched or inserted wires or plates, which lie between successive tumblers. These uprights are mounted on the lock casing or on the plate or bolt to which is also mounted the pivot or tumbler stud, upon which the tumblers pivot or swing. The tumblers are assembled one after the other upon this plate, and between each pair of tumblers a wire or plate is placed between the uprightsand lies between said tumblers. A wire ring or washer is interposed between each tumbler surrounding the pivotal pin.

I will now describe the embodiment of my invention, as shown in the accompanying drawings.

Figure 1 is a front view of a lock embodying my improvement with a portion of the face removed. Fig. 2 is a section between the tumblers at right angles to the lines 33, Fig. 1. Fig. 3 is a section on the line 3-3, Fig. 1. Fig. 4 is a detail perspective view of the plate or bolt.

In the embodiment of my invention, as described in the drawings, I have shown the same as applied to a shackle lock, although the invention is not limited to any particular lock. 7

In the drawings, a is the shackle, b the dog, a the bolt, 03, d, (2?, etc., are the tumblers as shown. Projecting vertically from the bolt 0 are the lugs e.

i is the opening for the pivotal pin 7 on which the tumblers and bolt are pivoted.

The tumblers are provided with apertures so that they can be mounted on the pivotal pin Between each pair of tumblers, and surrounding the pivotal pin 7", is interposed the wire separator or washer g.

h are wires extending from onelug to the other lug, and lying between each pair of tumblers. By this construction, all danger of the tumblers freezing or attaching one to the other is avoided.

Having now fully described myinvention,

rality of tumblers, of a plate, verticallugs f projecting from said plate, and wires passing between said lugs and lying between contiguous tumblers. 2. In a lock, the combination with a plurality of tumblers, of vertical lugs extending transversely of the direction of extension of the tumblers, means independent of the tumblers to support the lugs, and spacing devices extending between said lugs and lying between contiguous tumblers.

. 3. In a lock, the combination of a plurality of tumblers, a pivot pin upon which said tumblers are mounted, spacers sur- 1 rounding said pin and extending-between contiguous tumblers, said spacers being separate and independent from each other and held in operative position by said pin, and spacing devices lying between contiguous tumblers at a point removed from thepivotal point.

4:. In a lock, the combination of a plurality of tumblers, a pivot pin upon which said tumblers are mounted, spacers surrounding said pin and between contiguous ous tumblers.

5,1In a lock, thecombination with a plurality-of tumblers and a plate, of a pivot pin upon which said tumblers and plate are pivotally mounted, spacing devices extending between contiguous tumblers, and means 10 on the plate to'support said spacing devices.

In testimony of which invention, I have hereunto set my hand, at Philadelphia, 0 this 26th day of January, 1914. c

ARTHUR O. JACKSON.

Witnesses:

WALTER M. CONARD, LEO M. -NOLAN.

(lopies 'of this patent maybe obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

